Spray nozzle



Aug.23, 1938. H. E. NORTON I SPRAY NOZZLE Filed May 9, 19:55

INVENTORY Horzan ATTO R N EY Patented Aug. 23, 1938 UNITED STATES PATENT OFFICE 8 Claims.

The object of this invention is to produce a spray nozzle that will convert liquid into a very fine spray or mist.

Another object of the invention is to produce a spray nozzle that will produce a very fine spray distributed over a considerable angle in a comparatively thin layer.

Another object of the invention is to provide a spray nozzle that will produce a very fine spray from liquid forced through it under high pressure.

Another object of the invention is to produce a spray nozzle that will produce a fine spray, by forcing the liquid through a narrow slot in a curved plate at the end of the nozzle, under high pressure. I

Another object of the invention is to combine in the nozzle a curved plate having a narrow slot therein at the end of the nozzle, with a baffle plate inside of the nozzle having openings therein that give to the liquid a tangential or swirling motion before it reaches the exit opening.

These and other objects of the invention will be illustrated in the drawing, described in the 25, specification, and pointed out in theclaims at the end thereof.

In the drawing:

Figure 1 is a side elevation of the spray nozzle.

Figure 2 is an end elevation of the spray nozzle, 30.;locking at it from the left of Figure 1.

Figure 3 shows a cross section of the nozzle, the section being taken on the line 3r3$ of Figure 1.

Figure 4 is an elevation of the bafile plate shown in Figure 3.

35 Figure 5 is a front elevation of a modified form of the spray nozzle.

In the drawing like reference numerals indicate like parts.

In the drawing reference numeral l indicate 40 a tube, on which is mounted a housing or hub 2.

This housing is threaded on the outside as indicated at 3 and on the end is provided with a seat 4, on which rests the twirling or baflle plate 5. On this baflie plate rests a washer or gasket 6.

45 On top of this rests a concave disc I having a long, narrow slot 8 therein. The parts are held together by a cap 9, which is threaded on to the housing and has an annular shoulder l0 thereon, which engages the rim or seat provided therefor 50 in the concave disc I.

The twirling plate 5 is stationary and has two holes I I and I2 cut tangentially near the periphery thereof. This plate divides the end of the spray nozzle into two chambers I3 and. I4. The

55 twirling plate 5 causes the liquid as it flows from the rear chamber l3 into the forward chamber I 4 to take on a swirling motion. The twirling plate is also provided with a central opening l5 through which some of the liquid goes direct. The tangential openings II and I2 form a whirl- 5 pool in the forward chamber I4, and the central opening l5 sends a jet into the forward chamber that tends to break up the whirlpool. These openings cause the liquid to reach the slot 8 with cross currents that interfere with or pre- 10 2 vent the liquid from being projected through the slot in a solid mass, and instead, cause it to be spread out and broken up into an extremely fine spray or mist within a short distance of the nozzle, and which, under high pressure of from 200 15.

to 500 pounds, is projected from the nozzle to an ample distance for effective spraying of fruit trees.

The mist emerges from the nozzle in a fanshaped stream that tapers anywhere from 45 to 20 cut with a mill having a width of about a thirtysecond of an inch. The tangential holes H and I2 are drilled with a bevel of about sixty degrees, and the central hole I5 is drilled substantially perpendicular to the plate.

The plate 5 may be formed with as many as six tangential holes, similar to the holes II and I2, or with any intermediate number.

In Figure 5 I have shown a modification of the plate I, in which the plate I with the slot 8 is replaced by a similar concave plate with a series of five small holes l6, l6 therein.

I claim:

1. A spray nozzle, comprising a tube, a hub on the end thereof, a flat stationary twirling plate in the end of said hub having slanting twirling openings therein through which liquid can pass,

a concave plate attached to the end of the hub and forming a shallow substantially spherical segmental chamber between it and the twirling plate, a long narrow slot extending diametrically across and through the concave plate.

2. A spray nozzle, comprising a tube, a hub on the end thereof, a flat stationary twirling plate closing the end of said hub, a concave plate attached to the end of the hub and forming a shallow substantially spherical segmental chamber between it and the twirling plate, said twirling plate having tangential openings therein through which liquid can go, said tangential openings arranged to cause the liquid to whirl in the segmental chamber, said concave plate having a long slot extending diametrically across and through it.

3. A spray nozzle, comprising a tube, a hub on the end thereof, a flat twirling plate closing the end of said hub, a concave plate attached to the end of the hub and forming a forward segmental chamber between it and the twirling plate, said twirling plate having tangential openings therein through which liquid can go, said tangential openings causing the liquid to whirl in the forward chamber, said concave plate having a long slot extending diametrically across it, said twirling plate having a central opening therein through which a jet of liquid passes straight forward into the liquid that has passed through the tangential openings.

4. A spray nozzle, comprising a tube, a hub on the end thereof, a twirling plate at the end of said hub forming a chamber in the hub between the plate and the tube, said plate having slanting twirling openings therein through which liquid can pass, a concave plate attached to the end of the hub and forming a substantially spherical shallow chamber between it and the twirling plate, a long narrow slot extending diametrically across and through the concave plate.

5. A spray nozzle, comprising a tube, a hub on the end thereof, a flat stationary twirling plate closing the end of said hub having a slotted orifice, a concave plate attached to the end of the hub and forming a shallow substantially spherical segmental chamber between it and the twirling plate, said twirling plate having two tangential openings therein near the margin thereof spaced about 180 degrees apart through which the liquid passes in directions adapted to set up a whirling motion in the forward chamber around the central axis of the plate, a central opening passing axially through said twirling plate between the tangential openings, through which central opening liquid passes directly toward the center of the concave plate, the liquid that passes through said tangential and axial openings setting up cross currents in the forward chamber.

6. A spray nozzle comprising a tube, a hub on the end thereof, a stationary twirling plate in the end of said hub having slanting twirling openings therein through which liquid can pass, a concave plate attached to the end of the hub and forming a shallow substantially spherical segmental chamber between it and the twirling plate in which the liquid is adapted to whirl, said concave plate having a long narrow slot extending diametrically across it and through which the liquid passes under pressure, the area of the openings in the twirling plate being several times the area of the opening of the long narrow slot.

7. A spray nozzle, comprising a tube, a hub on the end thereof, a stationary twirling plate in the end of said hub having slanting twirling openings therein through which liquid can pass, a concave plate attached to the end of the hub and forming a substantially spherical shallow chamber between it and the twirling plate, and discharge opening means through said concave plate arranged along a substantial portion of a diametral line of said concave plate to produce a flat spray mist the cross-sectional area of said discharge opening means being less than the area of the twirling openings.

8. A spray nozzle comprising a hub, said hub having a shoulder and seat formed in one end thereof and having a male thread on the outside thereof, a twirling plate resting in said seat and closing the end of the sleeve, a washer resting on the end of the hub and the edge of the twirling plate, a shallow substantially spherical segmental plate having its edge resting on said Washer, a sleeve having an inwardly turned flange on one end engaging over the outer edge of said segmental plate and having a female thread at the other end engaging the male thread on the hub and clamping the parts together, slanting twirling openings through said twirling plate and discharge opening means through said segmental plate arranged along a substantial portion of a single great circle of said segmental plate, to produce a flat spray mist, the cross-sectional area of said discharge opening means being less than the area of the twirling openings.

HERBERT E. NORTON. 

